Patent US4649618A successfully refreshed from Google Patents.
US4649618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing oil seals
Assignee: Individual
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Filing: 1986-04-10
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Granted: 1987-03-17
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Expires: 2006-04-10
Abstract
Abstract A method for removing an oil seal and the like from a housing is disclosed, wherein the seal is of the type which is received in the housing for providing a sealed relation between the housing and a shaft which projects outwardly through the seal. The method is preferably carried out utilizing a tool which comprises a shank portion, and a working portion of generally S-shaped configuration which extends from the shank portion, the working portion comprising an upper portion and a lower portion which terminates in a tapered pry point. The tool is operable for removing a seal in accordance with the method by inserting the pry point between the seal and the shaft and then moving the tool so that the lower portion of the working portion rolls on the shaft to extract the seal. Thereafter, if necessary, the tool can be rolled further on the shaft until the upper portion engages the end of the shaft to provide additional leverage for extracting the seal.
Inventors
- 👤 Scott A. Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:51
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/0028; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49815; Y10T29/49822; Y10T29/53; Y10T29/53657; Y10T29/53796; Y10T29/53896
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
120 words
A method of removing an oil seal from a housing, wherein the seal is received in a recess in the housing for providing a sealed relation between the housing and a rotatable shaft which projects outwardly a short distance from the seal comprising inserting a pry point of a tool between said seal and said shaft, said tool comprising an elongated rod having a lower working portion which extends arcuately outwardly and back relative to the longitudinal axis of said rod terminating in said pry point, said tool being inserted so that the outer surface of said lower working portion faces said shaft, and rolling the outer surface of said lower working portion on said shaft to extract said seal.
Claim 2
Independent Claim
120 words
A method of removing an oil seal from a housing, wherein the seal is received in a recess in the housing for providing a sealed relation between the housing and a rotatable shaft which projects outwardly a short distance from the seal comprising inserting a pry point of a tool between said seal and said shaft, said tool comprising an elongated rod having a lower working portion which extends arcuately outwardly and back relative to the longitudinal axis of said rod terminating in said pry point, said tool being inserted so that the outer surface of said lower working portion faces said shaft, and rolling the outer surface of said lower working portion on said shaft to extract said seal.
Claim 3
Dependent Claim
34 words
In the method of claim 1, the outer surface of said lower working portion being configured for reduced lateral slippage of said tool when said lower working portion surface is bearing on said shaft.
Claim 4
Dependent Claim
21 words
In the method of claim 2, the outer surface of said lower working portion being substantially flat in a transverse direction.
Claim 5
Dependent Claim
107 words
In the method of claim 1, said tool further characterized as having an upper working portion which extends arcuately and back relative to the longitudinal axis of said rod from the upper end of said lower working portion in substantially the opposite direction as said lower working portion, said rolling step further characterized as rolling the outer surface of said lower working portion on said shaft until the inner surface of said upper working portion engages the terminal end of said shaft, said method further comprising thereafter rolling the inner surface of said upper working portion on the terminal end of said shaft to extract said seal.
Claim 6
Dependent Claim
35 words
In the method of claim 4, the outer surface of said lower working portion being configured for reduced lateral slippage of said tool when said lower working portion outer surface is bearing on said shaft.
Claim 7
Dependent Claim
17 words
In the method of claim 5, said lower working portion being substantially flat in a transverse direction.
Claim 8
Dependent Claim
28 words
In the method of claim 5, the inner surface of said upper working portion being configured for reduced lateral slippage of said tool on said shaft terminal end.
Claim 9
Dependent Claim
21 words
In the method of claim 7, the inner surface of said upper working portion being substantially flat in a transverse direction.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |